9 Blaspheme Quarantine

Tips

You've cleared out the large square hallway, including the aliens on
that ledge, but now you don't see anywhere to go? Find the
elevator that will take you up a level (activated by the switch
near the light switch on one side of the level). Then, while
running, jump across to the ledge, and head to the left. If
done correctly, a door should have opened leading you into the next
part of the level, with a supply of ammo just inside to the left.

Now you've cleared out the other square area, and are stuck
down in a pit? Then go to the center of the west wall and
look for a door. This will reveal a long corridor that will take
you back to the first part of the level, and the door to the final
room will be open.

Secrets

As an added bonus, you can get to read the lyrics to the Durandel
song! After you return to the first part of the level, redo the
level (no monsters this time, of course), and when you get to the
room with all the elevating platforms, go to the computer terminal
and read what Durandel has to say. Note: make sure your shields
are charged before reading, because Durandel will jump you from
here to the next level.

Also within the elevator room is an ammo cache. The door is located
just left and behind you from where you teleport in, but it will only
open once you touch the left-hand wall near the teleport out of the
level, so there is a lot of elevator timing and luck involved.

There is a second ammo cache, as well as another terminal, in the
room with the slowly retracting door. The cache is located in the
corner where you teleport into this room, but to activate, you need
to grenade jump onto the lower right-most portion of the sniping ledge
on the other side of the room.